I know people really like their yuri, but idk their whole dynamic feels unhealthy and codepentent. I wouldn't mind too much if they get together, but I feel like that would just be a slap to the deceased brother's face. Especially on Nozomi's part, as I feel like she sees too much of her husband in Shino, and is one of the reasons that she wants to be as close to her as possible.
Looking at it that way, a romantic relationship would feel, to me at least, awkward, and honestly kinda creepy, especially when you remember the incident that brought them together in the first place. I'm not bashing anyone for wanting them to end up together, I'm just trying to offer some insight as to why some of us may be put off by the mere thought of it.